Finding the Fourth Proportional to 1,061.24, 1,592.23 and 412.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.24 : 1,592.23 = 412.43 : x
2. Step 2: Convert to fraction form
   1,061.24/1,592.23 = 412.43/x
3. Step 3: Cross multiply
   1,061.24x = 1,592.23 × 412.43
4. Step 4: Simplify right side
   1,061.24x = 656,688.43
5. Step 5: Solve for x
   x = 656,688.43/1,061.24
6. Step 6: Final answer
   x = 618.79